Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"Ring-compound"”.
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Copper complexes of dinucleating octa-azamacrocyclic ligands
… with the appropriate polyamine; I, large-ring octa-aza macrocycles e.g. the 28—membered ring compound 5,6,7,8,15,16,23,24,25,26,33,34— dodecahydrotetrabenzo(e,m,s,a’) (1,4,11,15,18,22,25) octaaza- cyclooctacosine and related 30- and 36- membered ring compounds; II, the "fused" …
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A Contribution to the Chemistry of 1,2,3-BENZOTHIADIAZOLE
… that 1,2,3-benzothiadiazole is a cyclic ring compound are reviewed. Its pKa and ultraviolet spectrum are discussed. Evidence that the -NsN- group in 1,2,3-benzothiadiazole resembles a nitro-group is quoted and this fact together with the suggestion that there is partial bond fixation in …
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Second Order Interactions in Solid State Systems
… and, specifically, hydrogen bond formation during the Nsp$^{2}$➔Nsp$^{3}$ transition. Chapter 5 investigates the hydrogen bonds formed by 'univalent' (i.e C=S) and 'divalent' (i.e -S-) sulphur, and compares the results with data for their oxygen analogues. Chapter 6 describes a novel method …
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The synthesis of some new aromatic polycyclic hydrocarbons
… In recent years more than 450 synthetic compounds have been found to be carcinogenic, and more than 200 are polycyclic aromatic hydrocarbons, their derivatives and analogues. Recently a new polynuclear hydrocarbon, a seven ring compound naphtho[2,1-a]perylene was synthesized in This …